Bearing



y 8, 1935. c. G. JANSON 2,003,080

BEARING Original-Filed June 5, 1931 s Sheets-Sheet 1 I INV NTOR fz 1% Km By X;

w zATT O NEY y' 1935. c. e. JANSON ,00 0,

BEARING Original Filed June 5, 1931 .3 Sheets-Sheet 2' /////////Z;7%\\ WXXW- W4 IN NTOR )QQ/ M May 28, 1935. c. e. JANS ON 2,003,080

BEARING Original Filed June 5, 1951 s Sheets-Sheet s mv NTb si/ ,ng

4; ATroimEY Patented May 28, 1935 2,003,080.

UNITED STATES PATENT- OFFICE BEARING Carl Gustaf Janson, Stockholm, Sweden, assignor to Aktiebolaget Nomy, Stockholm,- Sweden, a

corporation of Sweden Application June 5, 1931, Serial No. 542,224. Renewed September 6, 1933. In Sweden June 10, 1930 12 Claims. (01308-73) My invention relates to bearings and more case is a crank pin, and an outer member 4. particularly 'to radial bearings. Still more par- Member 4 may be made of two parts as shown ticularly my invention relates to bearings of the and is held between the cap I and the yoke 8 type employing a plurality of bearing blocks of a connecting rod 6. The cap and yoke are which are tiltable to form wedge-shaped, loadsecured together by means of bolts '2l. In 5 sustaining oil films. Still further, my invenorder to prevent movement of the outer memtion relates specifically to bearings'for use with her 4 with respect to the connecting rod proper, a rotatable shaft or part or parts having movea key 9 y be used. The m'ember 4 has an ment confined to one relative direction of rotainside spherical surface 5 the center of which 10 tion. Such, for example, is the type of bearing is the symmetric center of thebearing assem- 10 used in connection with the main crank shaft bly, that is, the center of the crank pin 3. of an automobile engine. Each of the blocks 2 is provided with a radi- One particular feature of the invention is ally nwa d y extending p on III, which the provision of means, preferably in the form constitutes a tilting projection. This projection of cooperative surfaces asymmetrically disposed bears against the outside surface of the inner 15 on the bearing parts for restricting the blocks member 3. As shown in Fig. 3, this projection to One manner of fitting with respect to a 00- III is rearward of the center of the block, with operatingpart. respect to the direction of rotation denoted by I The invention will be explained in detail in the arrow. {The inner member 3 has a periph- 2o connection with the accompanying drawings eral project on l. w ch 'is o i e u aro step- 2 on the line ll of Fig. 2, of a connecting rod showing several apparatusesembodying the inped surface. The projection H has a plurality vention, which drawingsconstitute a part of of surfaces llb, a plurality of surfaces I6;.and

this specification and of whi h; I a pluralityof surfaces H, of which the surfaces Fig. 1 is a side view, partly in'section, taken III), are of least radial distance, the surfaces I I6 are of intermediate radial distance, and the 25 bearingembodying the invention; surfaces I! are of greatest radial distance. In Fig. 2 is taken on the line 2-2 of Fig. 1; other words, the outer surface of the projection Fig. 3 is a cross-sectional view-of a part of His stepped'up from the surface Hb to the surthe bearing structure of Fig. land is taken on face It and is again stepped up from the surthe line 33 of Fig. 1; face l6 to'the surface l'l. As shown in Fig. 1, 30

taken on the line 5--5 of Fig. 4;

' Fig. 8 is a side view of the member shown in Fig. 4 is an axial cross-sectional view ofa the projection is symmetric with respect to other "form of bearing embodying the inventhe bearing. R y in line with the P 7 3 tion, and is taken on the line 4-4 of Fig. 5; S tion ll, each block 2 is cut away at I2, I4, and

Fig. 5 is a transverse cross-sectional view 5 to fo m s eps adjace t t es epp d su c lib, l6, and ll of the pi'ojection ll. Thus there 35 Fig. 6 is a view taken on the line 6-6 Of is 8.' recess centrally disposed in each block Fig. 4; which cooperates with the projection I I. The

Fig, 7 i an end View of one member of t recesses in the blocks 2 are but slightly wider bearing assembly Shown in Figs 4, 5, and than the projection IL. The projection ll serves in connection with the block recesses to 40 Fig. 7; keep the parts in axial alignment. The .out-

Fig. 9 is a side view, p rtly in section, show y g i g g f fggi z ggggsgg 2:? ing another form of connecting rod bearing ac i r a 1 a a ment against which-that surface of the block figflg i gf igf and 1s taken-on the abuts which extends radially between the sur- 45 Fig 10 is a'tranvrse cmss sefina1 View face l2 of the block recess and the surface l4 th f d of the block recess. When the inner member i on 9 me an 3 is rotated relative to the outer member in the 11 Shows part of the structure shown direction shown by the arrow in Fig. 3, the block in Flgsand abuts against the surface l3 and is tilted on 50 e m {11018 Partlcularbf embodl' the forward edge a of the projection In, the m t f the mv tmn shown In Flgs- 2, and forward part of the block moving radially inthe ri Comprises a plurality f b a i g ward to form a wedge-shaped space between blocks 2 having normal operative positions radithe block and the surface 5. Since the block allybetween an inner member 3, which in this is cut away at l4 and I5 at the rear end thereof 55 with respect to the direction of rotation, a recess l8 isp'referably provided at the forward portion thereof to balance the block with respect to weight of material. Obviously, the recess l8 may be of any shape.

The forward end of each block is limited in peripheral movement both by the respective abutment I3 and therear edge of the part of the projection l I, next forward of the block, extending outwardly to the surface ll.

By stepping the block and the projection H as at M and I6, the block and the projection H are respectively so shaped that the block is restricted to one manner of fitting with respect to the inner member. It will be seen that if the block were inverted so that the step M were forward instead of rearward with respect to the direction of rotation, the surface [2 could not be adjacent the surface llb since the step [4 would be prevented from sufi'ici ent inward movement due to the surface l'l. Thus, both for the original assembly of parts and for reassembly in case the bearing is taken down, assurance may be had that the bearing blocks will befitted in only one respective relation. This is important particularly with tiltable blocks having offset portions which are asymmetrical since, if one or more blocks were inserted incorrectly, the wedge-shaped steps might not be formed in the right direction. To permit the blocks to be put in backwards might result in metal-to-metal contact and destruction of the bearing. The spherical surface 5 is preferred since it compensates for any tendency of the parts to move out of alignment.' Furthermore, this spherical surface takes up a certain amount of axial thrust.

In the embodiment shown in Figs. 4 to 8, inclusive, like reference characters in general represent like parts. This embodiment diflfers "essentially from that above described in that the tilting edges are provided on the inner member instead of on the blocks. The parts I9 and 20 in this embodiment correspond to the part 3 in the previous embodiment. The member 20 is a separate ring secured-to the shaft IS. The driving ring 20 is provided with axial recesses 22 and cylindrical surfaces 23, the, step between these surfaces constituting tilting shoulder a. When the shaft is is rotated as indicated by the arrow, the .blocks tilt radially inward into recesses 22. The recesses 22 extend the whole width of the bearing so that theprojection H is made up of a number of projecting parts, each at the rearward end of a block. It will be seen that in this case likewise due to the offsets at the rear end of the block it is impossible to insert any block in but one relation with respect to the'driving member 20. Thus there is an assurance that the blocks will always be positioned to tilt correctly and that the wedge-shaped films 11 the same result is obtained by making the the projecting parts I la. It is impossible to place the blocks 2 in this embodiment in any but one position relative to the crank pin 3 since if the blocks were reversed as to position, the recesses 26 would be on the other side of the center line with respect tothe member II, and the projecting parts I'm would strike the main inner surface of the block from which the projection l0 extends, and thus it would be impossible for the blocks to be fitted into the bearing.

While I have described several forms of apparatus for carrying out the invention, it will be obvious that the invention is susceptible of embodiment in a variety of other structures,

wherefore I am not to be limited to the precise forms shown.

What I claim is:

1. A bearing comprising an inner member, an outer member, said members being relatively rotatable, and a bearing block between said members, said block and said inner member having irregular surfaces to cause tilting of the block comprising a projection on said inner member and a recess in said block to cooperate with said projection, the projection and recess in operative position being asymmetric with respect to the block to restrict the block to one manner of fitting with respect to the inner member.

2. A hearing comprising an inner member, an

bers, said block and said inner member having irregular surfaces to cause tilting of the block comprising a projection on saidinner member and a recess in said block to cooperate with said projection, the projection and recess in operative position being axially asymmetric with reparts asymmetric axially instead of radially.-

The ring, II is oft-center with respect to the bearing,'as clearly shown in Fig. 9., This ring may be made up of several parts, and may be held in place by a caulking strip of soft metal 25 and, if desired, by a key 28. The-parts of the ring ll may be electrically welded at the ends -in order to connect the parts with each other. The ring H may also if desired be electrically welded to the crank pin. At the ends of all of the blocks are asymmetrically disposed recesses 26 which are radially in alignment with spect to the block to restrictv the block to one manner of fitting with respect to the inner member.

3. A hearing comprising an inner member, an outer member, said members being relatively rotatable, and a bearing block between said members, said block and said inner member having irregular surfaces tocause tilting of the block comprising a projection on said inner member and a recess in said block to cooperate with said projection, the projection and recess in operative position being radially asymmetric 4. A bearing comprising an inner member,

an outer member, said members being relatively rotatable, and a bearing block between said members, said block and said inner member having irregular surfaces to cause tilting of the block comprising a projection on said inner member and a recess in said block to cooperate with said projection, the projection and recess in operative position being asymmetric with respect to the block to restrict the block to one manner of fitting with respect to the inner member, and said block and said outer member having cooperating spherical surfaces.

5. A' hearing comprising an inner member,

an outer member, said members being relatively rotatable, and a bearing block between said of fitting with respect to the inner member, and said projection providing an abutment for the block and said block having a tilting shoulder between the center of the block and the abutment.

6. A bearing comprising an inner member, an outer member, said members being relatively rotatable, and a bearing block between said members, said block and said innermember having irregular surfaces to cause tilting of the block comprising a projection on said inner member and a recess in said block to cooperate with said projection, the projection and recess in operative positionbeing asymmetric with respect to the block to restrict the block to one manner of fitting with respect to the inner member, and said projection providing an abutment for the block, said block having a tilting shoulder between the center of the block and the abutment, and said block and said outer member having cooperating spherical surfaces.

7. A hearing comprising an inner member, an outer member, said members being relatively rotatable, and a plurality of bearing blocks between said members, said bearing blocksand one of said members having cooperating irregular surfaces to cause tilting of the blocks, and means for restricting the blocks to one manner of fitting with respect to said one of said members.

8. A hearing comprising an inner member, an

outer member, said members being relatively rotatable, and a bearing block between said members, a peripherally extending projection on said inner members, said block being recessed to cooperate with said projection, means for limiting peripheral movement of the block relative to the projection and said projection having different radial extents at the ends of the blocks.

9. A bearing comprising an inner member, an

recesses and projections to cause tilting of the i blocks, and means for restricting assembly of the bearing to one directional position of the blocks with respect to said members.

11. A bearing comprising an inner member, an outer member, said members being relatively rotatable, and a bearing block between said members, said block and said inner member having stepped surfaces to cause tilting of the block comprising a projection on said inner member and a recess in said block to cooperate with said projection, the projection and recess in operative position being asymmetrical with respect to the block to restrict the block to one manner oi fitting with respect to the inner member.

12. In a bearing for a connecting rod, an irmer member, an outer member, said members being relatively rotatable, a plurality of bearing blocks between said members, and a projection on each bearing block for contacting said inner member, said projection being located nearer one end of the block than the other said inner member and said blocks having cooperative recesses and projections for restricting assembly of the bearing to one directional position of the blocks with respect to said inner member.

CARL GUSTAF JANSON. 

